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MCQs

Total Questions : 1284 | Page 125 of 129 pages
Question 1241. A body is dropped from a height of 100 m and at the same time another body is projected vertically upward with a velocity of 10 m/sec. The two particles will
  1.    Meet after 1 sec
  2.    Meet after 10 sec
  3.    Meet after 5 sec
  4.    Never meet
 Discuss Question
Answer: Option B. -> Meet after 10 sec
Question 1242. The total kinetic energy of a hoop of mass 2 kg and radius 4 m sliding with linear velocity 8 m/sec and angular velocity 5 radian/sec is
  1.    464 J
  2.    400 J
  3.    89 J
  4.    64 J
 Discuss Question
Answer: Option A. -> 464 J
Question 1243. Angular acceleration of a particle may be expressed as
  1.    Radians/sec²
  2.    Revolutions/sec
  3.    All listed here
  4.    Degrees/sec²
 Discuss Question
Answer: Option C. -> All listed here
Question 1244. A weight of 100 kg is supported by a string whose ends are attached to pegs ‘A’ and ‘B’ at the same level shown in below figure. The tension in the string is
  1.    100 kg
  2.    120 kg
  3.    750 kg
  4.    50 kg
 Discuss Question
Answer: Option A. -> 100 kg
Question 1245. The centre of gravity of the trapezium as shown in below figure from the side is at a distance of
  1.    (h/2) × [(2b + a)/(b + a)]
  2.    (h/3) × [(2b + a)/(b + a)]
  3.    (h/2) × [(b + 2a)/(b + a)]
  4.    (h/3) × [(b + 2a)/(b + a)]
 Discuss Question
Answer: Option D. -> (h/3) × [(b + 2a)/(b + a)]
Question 1246. The member which does not carry zero force in the structure shown in below figure, is
  1.    ED
  2.    BC
  3.    DC
  4.    BD
 Discuss Question
Answer: Option D. -> BD
Question 1247. The vertical reaction at the support ‘A’ of the structure shown in below figure, is
  1.    1 t
  2.    3.5 t
  3.    2 t
  4.    3 t
 Discuss Question
Answer: Option D. -> 3 t
Question 1248. A symmetrical body is rotating about its axis of symmetry, its moment of inertia about the axis of rotation being 2 kg -m2 and its rate of rotation 2 revolutions/see. The angular momentum of the body in kg-m2/sec is
  1.    4
  2.    8TC
  3.    8
  4.    6 7i
 Discuss Question
Answer: Option B. -> 8TC
Question 1249. Two objects moving with uniform speeds are 5 m apart after 1 second when they move towards each other and are 1 m apart when they move in the same direction.The speeds of the objects are:
  1.    3 m/sec and 3 m/sec
  2.    2 m/sec and 2 m/sec
  3.    4 m/sec and 6 m/sec
  4.    3 m/sec and 2 m/sec
 Discuss Question
Answer: Option D. -> 3 m/sec and 2 m/sec
Question 1250. A bullet weighing 10 gm moves with a velocity of l km/sec. Its kinetic energy is(i) 5000 Nm(ii) 5000 kg.m(iii) 5000 J
  1.    Both (ii) and (iii)
  2.    Both (i) and (iii)
  3.    All (i), (ii) and (iii)
  4.    Only (ii)
 Discuss Question
Answer: Option B. -> Both (i) and (iii)

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